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/******************************************************************************
*
* Project: Shapelib
* Purpose: Sample application for adding a shape to a shapefile.
* Author: Frank Warmerdam, warmerdam@pobox.com
*
******************************************************************************
* Copyright (c) 1999, Frank Warmerdam
*
* SPDX-License-Identifier: MIT OR LGPL-2.0-or-later
******************************************************************************
*
*/
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "shapefil.h"
int main(int argc, char **argv)
{
/* -------------------------------------------------------------------- */
/* Display a usage message. */
/* -------------------------------------------------------------------- */
if (argc < 2)
{
printf("shpadd shp_file [[x y] [+]]*\n");
printf(" or\n");
printf("shpadd shp_file -m [[x y m] [+]]*\n");
printf(" or\n");
printf("shpadd shp_file -z [[x y z] [+]]*\n");
printf(" or\n");
printf("shpadd shp_file -zm [[x y z m] [+]]*\n");
exit(1);
}
const char *filename = argv[1];
argv++;
argc--;
/* -------------------------------------------------------------------- */
/* Check for tuple description options. */
/* -------------------------------------------------------------------- */
const char *tuple = "";
if (argc > 1 && (strcmp(argv[1], "-z") == 0 || strcmp(argv[1], "-m") == 0 ||
strcmp(argv[1], "-zm") == 0))
{
tuple = argv[1] + 1;
argv++;
argc--;
}
/* -------------------------------------------------------------------- */
/* Open the passed shapefile. */
/* -------------------------------------------------------------------- */
SHPHandle hSHP = SHPOpen(filename, "r+b");
if (hSHP == NULL)
{
printf("Unable to open:%s\n", filename);
exit(1);
}
int nShapeType;
SHPGetInfo(hSHP, NULL, &nShapeType, NULL, NULL);
if (argc == 1)
nShapeType = SHPT_NULL;
/* -------------------------------------------------------------------- */
/* Build a vertex/part list from the command line arguments. */
/* -------------------------------------------------------------------- */
int nVMax = 1000;
double *padfX = (double *)malloc(sizeof(double) * nVMax);
double *padfY = (double *)malloc(sizeof(double) * nVMax);
double *padfZ = NULL;
if (strchr(tuple, 'z'))
padfZ = (double *)malloc(sizeof(double) * nVMax);
double *padfM = NULL;
if (strchr(tuple, 'm'))
padfM = (double *)malloc(sizeof(double) * nVMax);
int *panParts;
if ((panParts = (int *)malloc(sizeof(int) * 1000)) == NULL)
{
printf("Out of memory\n");
exit(1);
}
int nParts = 1;
panParts[0] = 0;
int nVertices = 0;
for (int i = 1; i < argc;)
{
if (argv[i][0] == '+')
{
panParts[nParts++] = nVertices;
i++;
}
else if (i < argc - 1 - (int)strlen(tuple))
{
if (nVertices == nVMax)
{
nVMax = nVMax * 2;
padfX = (double *)realloc(padfX, sizeof(double) * nVMax);
padfY = (double *)realloc(padfY, sizeof(double) * nVMax);
if (padfZ)
padfZ = (double *)realloc(padfZ, sizeof(double) * nVMax);
if (padfM)
padfM = (double *)realloc(padfM, sizeof(double) * nVMax);
}
sscanf(argv[i++], "%lg", padfX + nVertices);
sscanf(argv[i++], "%lg", padfY + nVertices);
if (padfZ)
sscanf(argv[i++], "%lg", padfZ + nVertices);
if (padfM)
sscanf(argv[i++], "%lg", padfM + nVertices);
nVertices += 1;
}
}
/* -------------------------------------------------------------------- */
/* Write the new entity to the shape file. */
/* -------------------------------------------------------------------- */
SHPObject *psObject =
SHPCreateObject(nShapeType, -1, nParts, panParts, NULL, nVertices,
padfX, padfY, padfZ, padfM);
SHPWriteObject(hSHP, -1, psObject);
SHPDestroyObject(psObject);
SHPClose(hSHP);
free(panParts);
free(padfX);
free(padfY);
free(padfZ);
free(padfM);
return 0;
}
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